[Commonizer] Add CommonizerHierarchicalIT

Test platform dependencies on leaf source sets
^KT-46716 Verification pending

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/CommonizerHierarchicalIT.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.gradle
 
 import org.gradle.api.logging.configuration.WarningMode
 import org.gradle.internal.os.OperatingSystem
+import org.jetbrains.kotlin.konan.file.File
 import org.junit.Test
 
 class CommonizerHierarchicalIT : BaseGradleIT() {
@@ -111,6 +112,22 @@ class CommonizerHierarchicalIT : BaseGradleIT() {
         }
     }
 
+    @Test
+    fun `test platform dependencies on leaf source sets`() {
+        with(Project("commonizeHierarchicallyPlatformDependencies")) {
+            build(":checkPlatformDependencies") {
+                val klibPlatform = "${File.separator}klib${File.separator}platform${File.separator}".replace("\\", "\\\\")
+
+                assertSuccessful()
+                assertTasksExecuted(":commonizeNativeDistribution")
+                assertTasksExecuted(":checkLinuxX64MainPlatformDependencies")
+                assertTasksExecuted(":checkLinuxArm64MainPlatformDependencies")
+                assertContainsRegex(Regex(""".*linuxX64Main.*$klibPlatform.*[Pp]osix.*"""))
+                assertContainsRegex(Regex(""".*linuxArm64Main.*$klibPlatform.*[Pp]osix.*"""))
+            }
+        }
+    }
+
     private object Os {
         private val os = OperatingSystem.current()
         val canCompileApple get() = os.isMacOsX

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/commonizeHierarchicallyPlatformDependencies/build.gradle.kts

@@ -0,0 +1,53 @@
+import org.jetbrains.kotlin.gradle.plugin.sources.DefaultKotlinSourceSet
+
+plugins {
+    kotlin("multiplatform")
+}
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
+
+fun createPlatformDependenciesTestTask(sourceSet: DefaultKotlinSourceSet) {
+    tasks.create("check${sourceSet.name.capitalize()}PlatformDependencies") {
+        tasks.maybeCreate("checkPlatformDependencies").dependsOn(this)
+
+        // Dependencies forwarded to the IDE will be attached to the intransitiveMetadataConfiguration
+        val dependenciesConfiguration = configurations.getByName(sourceSet.intransitiveMetadataConfigurationName)
+        dependsOn("commonize")
+
+        doLast {
+            val dependencies = dependenciesConfiguration.files
+
+            dependencies.forEach { dependency ->
+                logger.quiet("${sourceSet.name} dependency: ${dependency.path}")
+            }
+
+            dependencies.forEach { dependency ->
+                if ("klib${File.separator}commonized" in dependency.path) {
+                    throw AssertionError(
+                        "${sourceSet.name}: Found unexpected commonized dependency ${dependency.path}"
+                    )
+                }
+            }
+
+            if (dependencies.isEmpty()) {
+                throw AssertionError("${sourceSet.name}: Expected at least one platform dependency")
+            }
+
+            val platformKlibPattern = "klib${File.separator}platform"
+            if (dependencies.none { dependency -> platformKlibPattern in dependency.path }) {
+                throw AssertionError("${sourceSet.name}: Expected at least one dependency from '$platformKlibPattern'")
+            }
+        }
+    }
+}
+
+kotlin {
+    linuxX64()
+    linuxArm64()
+
+    createPlatformDependenciesTestTask(sourceSets.getByName("linuxX64Main") as DefaultKotlinSourceSet)
+    createPlatformDependenciesTestTask(sourceSets.getByName("linuxArm64Main") as DefaultKotlinSourceSet)
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/commonizeHierarchicallyPlatformDependencies/gradle.properties

@@ -0,0 +1,4 @@
+kotlin.mpp.enableGranularSourceSetsMetadata=true
+kotlin.native.enableDependencyPropagation=false
+kotlin.mpp.enableHierarchicalCommonization=true
+kotlin.mpp.enableIntransitiveMetadataConfiguration=true

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/commonizeHierarchicallyPlatformDependencies/settings.gradle.kts

@@ -0,0 +1,10 @@
+pluginManagement {
+    repositories {
+        mavenLocal()
+        gradlePluginPortal()
+    }
+    val kotlin_version: String by settings
+    plugins {
+        kotlin("multiplatform").version(kotlin_version)
+    }
+}